One New Zealand invests NZD $100 million, wins top network award
One New Zealand has been recognised as the "Best in Test" mobile network for the fourth consecutive year following independent benchmarking by umlaut.
Umlaut, a global mobile network testing specialist owned by Accenture, conducted detailed assessments of mobile operators across urban, regional, and rural regions. The evaluation combined on-the-ground drive testing with six months of crowd-sourced data from April and May 2025, providing a comprehensive review of New Zealand's mobile network performance.
In the 2025 umlaut benchmark, One New Zealand achieved an overall score of 852 out of a possible 1000 (85.2%), ahead of Spark with 787 points and 2Degrees with 789 points. The testing criteria gave particular emphasis to real-life performance indicators including voice call quality, data speeds, and network reliability.
Testing results
According to the umlaut assessment, One New Zealand led in three core categories. These included voice services, which were measured by factors such as call setup time, continuity of data connectivity during calls, and overall voice quality. The company also ranked highest for data services, which examined web browsing performance, file download speeds, and the experience of streaming YouTube videos. Finally, One New Zealand was noted as the most reliable mobile network in New Zealand, leading on successful voice and data connections as well as call quality.
Thaigan Govender, General Manager Mobile Access Networks at One New Zealand, outlined the reasons behind the network's continued recognition:
Our fourth consecutive win is the result of smart, data-driven investment decisions that directly reflect how and where New Zealanders use our network and connectivity services.
Govender detailed the level of investment and infrastructure development over the past year, noting, "Over the past full year, we've invested over NZD $100 million into our mobile network alone, building or upgrading almost 300 cell sites to 4G and 5G across metro, urban and regional areas, plus working with the Rural Connectivity Group. These improvements materially improve coverage and performance in the places Kiwis live, work, and travel."
He continued, "We're stoked to be recognised as best in test for a fourth year running and are motivated to keep improving even further, using real-world data to deliver the best mobile experience in Aotearoa for One NZ customers and wholesale partners."
Ongoing development
One New Zealand has indicated further developments for the year ahead. Govender said, "We'll keep working to improve the network for our customers – whether that's through coverage and resilience innovation with the recently launched One NZ Satellite or through retiring legacy networks and re-using spectrum as we have planned with our 3G switch off from the end of the year – you can expect things to keep getting better as a One NZ customer."
Umlaut's benchmarking methodology is recognised for incorporating a robust set of criteria, drawing on a mixture of controlled test data and metrics collected from real users. The benchmarks assess networks based not only on speed but also on reliability and quality of service in a variety of real-world conditions.
The network's performance improvements over the past year are attributed by One New Zealand to substantial network investment. These included significant upgrades and new builds across different parts of the country, with a focus on upgrading cell sites to support the latest 4G and 5G technologies, and collaboration with initiatives aimed at expanding rural coverage.
The latest umlaut testing affirms One New Zealand's position as the highest-performing national mobile network during the most recent evaluation period.
